Register-stop for pipe-organs



Patented June 6, I899.

A. B FELG'EMAKER.

REGISTER STOP FOB PIPE ORGANS.

(Application flied Aug. 27, 1898.)

(N0 Model.)

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UNITED STATES PATENT OFFICE.

AUGUSTUS B. FELGEMAKER, OF ERIE, PENNSYLVANIA.

REGISTER-STOP FOR ,PlPE-ORGANS.

SPECIFICATION forming part of Letters Patent No. 626,414, dated June 6,1899.

v Application filed August 2'7, 1898. Serial No. 689, N 1 1 1 To allwhom it ntcty concern:

Be it known that I, AUGUSTUS B. FELGE- MAKER, a citizen of the UnitedStates, residing at Erie, in the county of Erie and State ofPennsylvania, have invented certain new and useful Improvements inRegister-Stops for Pipe-Organs an'dI do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention relates to register-stops for pipe-organs; and itconsists in certain improvements in the construction thereof, as will behereinafter fully described, and pointed out in the claims.

The invention is illustrated in the accompanying drawings as follows: I

Figure 1 shows a plan view of the device; Fig. 2, a section on line 2 2in Fig. 1; Fig. 3,21. sectional view of the stop-lever mechanism. Amarks an air-chamber from which the pipes 13 are supplied, the airpassing from the air-chamber A through a port a, a valve A, port a, andopening a There is'a chamber A for each register, and this chamber is incommunication through portssuch as Ct, a, and a with all the pipes ofthe same register. Air under constant pressure is contained in a chamber0 and is normally cut off from the air-chamber A by the valve 0. Whenthe valve 0 is open, the air passes through the.

port 0, chamber 0 and port a to the chamber A. The valve 0 is carried bya stem 0;

This stem is connected with the movable plate 0 of a bellows-motor 0 Thebellows-motor is connected by the ports 0 and C with .the chamber 0. Twovalves cl and d carried by the stem d, operate at the ends of the port 0the valve d closing the port 0 to the atmosphere and the valve dcontrolling the port C at its entrance to the chamber 0. These valves (Zand d are so arranged on the stems d that when one of them is closed theother is open. The stem cl is connected with the movable plate 61 of abellows-motor D. The duct D leads from the bellowsmotor D through a port6 to a chamber E. (See Fig.

3.) A valve 6 normally closes the port 6 and a spring 6 assists theair-pressure in closing the valve 6. A stop-lever F is connected by astem 6 with the valve 2.

By moving the stop-lever F the valve 6 is opened and air which ismaintained under pressure in the chamber E passes through the port 6 andport D to the bellows-motor D. This raises the plate (1 carrying thestem d and valves 02 and d upwardly, so that the valve d closes the port0 at its entrance to the chamber 0 and the valve d opens the port 0 tothe atmosphere. The area of the movable plate 0 of the bellows-motor cis somewhat larger than the area of the valve 0, so that when theair-pressure is reduced in the bellows-motor c the air-pressure, beinggreater upon the greater area of the bellows-motor, effects a movementof said motor and a consequent raising of the valve 0 and passage of airfrom the chamber 0 to the chamher A, where it is let into the pipes aseach key is touched. The chamber 0 runs transversely of the chambers Aand contains air from which all the different registers are supplied.The number may be increased indefinitely. When the stop-lever F is movedback to its normal position, the valve e is closed. A .valve 6 carriedby the stem e closes the passage 6 while the valve e is open. WVhen thevalve e is closed, this valve 6 opens the passage e which is incommunication with the port 6 to the atmosphere, thus reducing thepressure in the duct D and bellows-motor D. This reduction of pressurein the bellowsniotor and the air-pressure in the chamber 0 effect amovement of the plate d of the bellows-motor Dand a consequent closingof the valve 01 and an opening of the valve d This opening of the valved allows the air in the chamber 0 to pass through the ports 0 and (Jinto the bellows-motor 0 where by reason of the greater area of theplate 0 it is moved downwardly, thus closing the valve 0 and cutting offthe air-supply from the chamber A. A passage 0 leads from the chamber 0to the atmosphere, and a valve 0 carried by the stem c,opens thispassage when the valve cis closed and closes it when the valve 0 isopen. The resultof this is that when the valve 0 is closed, and thuscuts off the air from the chamber A, the air in the chamber A isimmediately reduced to atmospheric pressure through the opening 0 sothat when keys are operated to effect tones from other registers the airin the registers cut out is so reduced as to prevent the pipes of thatregister speaking.

This construction is simple, allows an indefinite multiplication of theregisters in a nately, saidmotor being operated in one di-' rection byainfrom the stop mechanism and in the opposite direction by thepressureof the air in the chamber C on said motor; a passage leading from said"motor; a Valve for controlling said passage; and stopmechanism foroperating said valve.

'2. In a register-stop, the combination with the chamber A, from whichis supplied to the pipes; of the air-chamber C, communicating with thechamber A, through the passage, 0 O and a Va1ve,c, controlling saidpassage; a stem, 0, carrying said valve; passage, 0 from the passage, 0to the atmosphere; valve, 0 carried by the stem, 0, and controlling thepassage, 0 the bellows-motor, 0

having its movable part connected with the stem, 0; duct, 0 and port, Gleading from said motor, 0 to the atmosphere and to the chamber, 0;valve, d, controlling the entrance of the port, 0 to the atmosphere;valve, d2, controlling the entrance of the port, G to the chamber, C;bellows-motor, D, arranged in the chamber 0 and having the movable part,d connected with the stem, (1'; the air-duct, D, leading to the motor,(1 an air-supply in communication with the duct, D; a valve controllingsaid air-supply; and

.a stop-lever controlling said valve.

In testimony whereof I affix my signature in presence of two Witnesses.

AUGUSTUS B. FELGEMAKER.

Witnesses:

M. BURY,

I-I. Z. LORD.

